Compressible piston-packing.



UNITED STATES Patented May 24., 1904.

PATENT OFFICE.

COMPRIESSIBLE PISTON-PACKING.

SPECIFICATION forming part of Letters Patent No. 760,632, dated May 24, 1904. Application filed September 30,1903. Serial No. 176,166. (No model.)

the inner sides of the cylinder in which it operates and in the employment of a sleeve inclosing the piston-rod and passing with it out through the gland or stufiing-box, said sleeve being movablewith relation to the piston-rod and having its upper end formingone portion of the piston-chamber. Within this chamber a suitable compressible packing is placed, and this can be moved or adjusted fromthe out side without opening the cylinder.

Referring to the accompanying drawing, the figure is a vertical central section of cylinders, showing my invention; I have shown my invention as here applied to a cylinder A of an elastic-fluid compressor. formed in the usual manner with surrounding water-jacket B and having valves through which the gas is admitted and discharged from the upper end of the cylinder.

As shown in the drawing, 2 is the pistonrod, havingan end or follower 3 fixed to the end of the rod within the cylinder. 'I 4 is a sleeve fitting snugly upon the piston rod and extending out through the stuflingbox 5 and the gland 6, which fits therein. I The inner face of the follower 3 andtheen 7 of the sleeve are here shown as beveled and; forming a chamber, between them, the size of; which is substantially equal to the thickness of thesleeve. Within this space I place a filling of compressible material of any suit-l ness'es. g

able or desired description which will serve 'as a packing for the piston and prevent leakage. I have found that a compound made of Babbitt metal broken into small irregular piege sufiicient to lie within this chamber" andwf gagit mixed with afiv suitable iLd a ueia 'e msqb fi i liififiv suit'ableiorflth purpose.

T 'sleveli'scapable of being turned from the outside and advanced with relation to the piston-rod and the packing, and the latter will be compressed between the inner end 7 of the sleeve and the head or follower 3 of the-piston-rod, thus making a tight joint;

Any adjustment of this packing can easily be made from the outside and without removing any of the other parts.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. The combination with a piston-rod having a head or follower, of a sleeve extending along the rod and through thestufling-box wherebydt is capable of longitudinal advancement from the outside, and a compressible packing or filling surrounding the rod between the inner end of the sleeve and thefollower.

2. The combination with a piston-rod and a head or follower fitted to the end within the cylinder, of a-sleeve fitting the piston-rod extending inwardly through the stufiing-box having the inner end fitting the interior of the cylinder, means for advancing the sleeve with relation to the piston-rod and a compressible packing located withinthe chamber between the sleeve and the head or follower.

' In testimony whereof I have hereunto set my hand in presence of two subscribing wit- JOHN C. KITTON.

Witnesses:

HENRY C. DROGER, JAMES L. KING. 

